Telautograph instrument.



A. L. GOLDEN. TELAUTOGRAPH INSTRUMENT.

APPLICATION FILED D11/.3.15, 1908.

2 SHEETS-SEEE; i.

W/TIVESSS Patented May 3, 193i()Y SHEETS-SHEET@ .Si'n'ilieation flied eceniber i968. Serial Hc, 4G? 6115;,

if. nnz'jy concer i "i that i. imnonni's L. lazen oi the United Stuten.. and Maitland. in the county oi tlny ili'torniu. have mafie HQ@ OT und use-tnt improvements in i i of which the j is c spcciicntion.

invention relates to improvements in instrnn :for copying written matter or drawings by electi'o-nnigni-ztic ineens, and it consiste in the eonsiructions, coxnoimxtions und arrangements hereinafter described und ciainicd. l

An object ot my inveniion is to provide a device hy ineens of which a person at one station nitty write e ietter, sign his name or execute n drnwing, which a similar device will reproduce another station in thc foi-in of an exact duplicate.

A turtluvr object ot' my invention is to provide an improved, ineans for accomplish ingr the above result, in which a series of magnets coact to ctie-et the increment of a. pencii or stylus in response to variations in an electric circnit.

Other objects and advantages will appear in the following specification and the novel tentures of the invention will he particu ,i pointed ont in the. appended ciaiins. iv invention illustrated in ythe accoin- .ei'wings, in which,HA

alive view ot' the peni: i Q a side aggneirn ifig. 5% is an e. Jian 'vieu the universal joint between the magnetcores. Fig. 5 is a plain View of nniiferuni bearing for the peneil stein. Fig. ti is n plan view oi the 'three magnets. Fig. i' is eliew showing' he relation oi ,the inagnetsrand the "pencil holder, and Fifi. 3 is a diagrammatic sketch showing the loperative circuits.

Referring now to 2- and 3 I have shown therein the solenoid magnets used in connection with the invention. They coinprise e tube 1 around'whiclris a layer oi? annealed. steel Wire laid lengthvvise over the outer surfaceof'the tube and covered with an insulating Wrivvping 3. A hard rubber plate 4 is arranged) at each end of the tuie'; A return 'oar 5 is provided, which consists 'of a series of annealed steel plates cut out in the form shown and bolted together as shown in Figs. 2 and 3.

The core 6 consists of a bundle of tine Sjrecileeton et Letters Fatemi.

annealed steel wires insidt` ot a hard ruhhcr casing', di metal lng' is ainchcd to one cnil. rThe core ii constructwl so that it will slide frecly hut not loosely inside ol the solenoid.

The arrangement oi the magnets is shown in Figs. o? T und cores of the ina nets point. to a conunon center, thc ange between the cores in the normal or central position being (300. The coros of the inagnets arc conncctcd h v means oi thc links? to a universal joint. The. links 7 are pivotcd at cach cud by the pivot. pins 7 :is shown in Fig. T. The universali joint consists of the outer ring` 8 having an inner concentric ring 9 pivoted for rotation on the pins 10. T he lever 1l pivoted Within the ring 9 on the pins l2 at right angles to the direction of the pins 10. 7With thc construction just dcscrihcd it is apparent that the lever 11 may haven' movement in. any direction except that of rotation around its own axis, or in the longitudinal direction of itsl axis.

As shown in Figs. i and 7 the lever 11 projects up through :in openingf in the table 13, being pivotally suspended. in said opening by means of the universal joint shown in Fig. 5. This joint. is somewhat similar to that already descril'ed, in that it has 11n outer ring i-i, :in inner concentric ring 15,`

a swivel post 2i, which is secured to the to?4 of the ,table and is adapted to slide baci'. and forth throngh said opening as the rod 17 is moved. The end Q12 oti the rod 17 constitutes the holder for the encil. 23.

The circnits oy which the evice is operated are Shown in Fig. 8. In this figure G denotes en alternating current generator. The coil A h's a split Winding, Ieach half having the saine number of ampere turns and the two halves together equaling the Winding on each ofthe other two magnets B .uid C. Another station is shown equipped with a similar set of magnets A", EQU', the terminals of the windings of the magnet A being grounded.

2 l Y v lfrom the foregoing descri tion of the various parts of the device t e operation thereof will be readily understood. When a message, signature or drawing is -to he sent, a sheet of paper is placed underneath the pencil at the sending station. The person sending theintakes the pencil and inscribes upon the paper whatever he wishes to be reproduced at the receiving station, where a similar sheet has been laced underneath the receiving pencil. i s the pencil at the sending station is moved to and fro the cores of the three magnets A, B, C, are moved in and out of their respect-ive magnets. This varies the magnetic ux in proportion to the amount ofmovement of the cores. The variations in the magnetic fiux changes the amount of current which can go through theline precisely in the same manner as a choke coil docs. The variation of the current causes a corresponding increase or decrease of niagnet'zation at the receiving station and hence a similar movement Aof the cores to that which is taking place in the sending station. The movement of the cores being the same, it will be observed that the movement of the pencil, the motion of which is controlled solelyl by the cores, will faithfully follow every move ment of the pencil at the sending station.

T he sendingv and receiving instruments arc practically identical and it is obvious that either can he used to send or receive with equal facility'. ln order to reduce the friction of the movable parts all the bearings shown are to be of the jeweled type.

l am aware that other forms of the device based upon the same general idea might y between the core of eac magnet and its versal joints senese writing instrument and electrical connections between the sets of magnets, the said apparatus constituting means for causing a writing instrument of one set to reproduce the motions of the writing instrument of another set.

2. In a telautograph instrument, a, plurality of magnets having movable cores, a universal joint connected with all of said cores, a lever pivoted in said joint, and a writing instrument pivotally secured to said lever.

3. In a. telautograph instrument, a plurality of magnets having movable cores, a universal joint connecting said cores togethcr, a lever pivoted to said universal joint, a support for said magnets, a second universal joint secured to said support, piv otal connections between the second universal joint and said lever, and a writing instrument pivotally connected to said lever.

4. In a telautograph instrument, a base, a plurality' of magnets secured to said base and each provided with a movable core and having their axes extending toward a com mon center, a universal joint located at said commonl center and having pivotal connections with each of said cores, a second universal joint secured to said base, a swiveled arm, a writing instrument secured to said swivelcd arm, and a lever having` pivotal connections with each of said universal 4joints and with said arma 5. In a telautograph instrument, a hase provided with an opening, three magnets, each having a movable core secured to said base with their` axes pointing to a common center, a universal joint having pivotal connections with each of said movable cores, a second universal joint disposed the opening in said base, a swivel arm, a swivel post securedsto said base and swivel arm, a writ-- ing instrument secured to said arm, a rod pivotally secured to said arm and arranged to extend through an opening' in said swivel post, and a lever having pivotal connections with said arm and with each of said uni ALPEQNSUS IJGUR GOLEN.

Witnesses;

WILLLAM K. GOLDEN,

E. LFRED BURKE. 

